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Links of Deep-Hole Tool and Machine Producers

Your suggestions are highly appreciated

United States Hall of Metalworking Boring (Deep Hole) Pavilion-newly established site.  Contains rather random list of the companies involved in deep-hole machining.

American Heller - a company that keeps good traditions of Heller Bremen.  Offers variety of BTA and Ejector drills as well as deep hole machines from Europe.   The lack of knowledge of the deep hole machining is compensated to a certain extend by  great experience.  The website is excellent.

  BGTB DmbH - Deep-hole drilling consulting. Very strange website showing little accurate info. Personally, I would not rely on their expertise.  

Boring Specialties, Inc. - is one of the largest and most comprehensive deep hole boring and machining facilities in the United States and Canada, offering a complete line of holemaking and hole finishing services such as trepanning, drilling, honing, skiving, pullboring, milling, turning, sawing and straightening for industries including oilfield, petrochemical, steel, aircraft, aerospace and transportation.

Botek-USA - Botek offers a variety of gundrills, special tools, BTA and Ejector drilling tools, as well as specialty drills and accessories. Botek is a good company but the problem is that its engineers are in Germany, i.e. too far from the everyday customers' needs and problems with machines designed and built in this country.  The company website contains no suitable information - my comments will be posted here. 

Burdon - Company does not have its own design of gundrill so it uses obsolete design by Eldorado. On its website, the gundrill terminology is wrong (as well as many other things). No ranges for length and diameter are provided as well any recommendation on the drilling regime, coolant parameters, carbide selection, etc.  

CITCO - CBN tip gundrills.  No info is provided on the website.  

  Dadson - DADSON produces gundrilling equipment.  

     - Danjon produces variety of deep-hole drills.  No drilling regime, machine requirements or any other help can be found on the website.  The design of drills is obsolete "a la Eldorado 1960'"  No questionnaire is required for a quotation.

Dearborn Precision Tubular Products, Inc. provides precision deep hole machining services to the paper manufacturing, medical,aerospace, oil & gas, power generation and nuclear industries. It has been in business since the early 1940's.  The company developed a number of unique tool designs capable to produce precision hole in different work materials.

  Dehoff - offers a large variety of machines to assure that its customers  receive the equipment necessary for the specified job.  Its wide range of  gundrill machines offers drilling capacities of 3/8" to 2" and slide travel's  from 18" to 84". The company also offer CNC Gundrilling, Gundrilling Cell,  BTA, and Ejector drilling  machines. 

  Drillunit - the name says it all.

           Gurhing is a newcomer in the U.S. gundrilling market.  Makes first good steps.

Gundrilling Solutions consulting company that offers solutions to your gundrilling problems.  Website has not much information on typical drill failures and process suggestions.

  Hammond and Co - Company has somewhat of questionnaire on its website where at least some parameters of tool geometry and design can be selected. No recommendations are given to help a customer to make the right decisions. No coolant, type of carbide, starting bushing requirements, machine requirements even mentioned, etc are provided.

  Hyper Tool - the company that has the best research facilities in the North America in terms of gundrilling. Occasionally produces great gundrills which may be referred to as application specific. Has the most detailed questionnaire. Website of  great help to users.  Quality of gundrills improved dramatically.  Uses application specific carbide grades to suit particular work materials and gundrilling systems.  Develops automated design system for its product.  Produces original Gizmos which are much better than multiple knock-offs. Produces a very versatile grinding fixture.  Has a great potential.

  International Drill Guide - Company manufactures a complete line of gun drill tooling to stop gundrill whipping and contain metal chips and coolant inside the gundrilling machine chip box. Stop gun drill whipping and reduces gun drill vibration. They are flexible plastic bushings which are stretched over a gundrill and rotate in a bearing.  

  Interface Devices - Company offers a 3,000 psi Gundrill Coolant Intensifier Pump combined with 3000 psi (approx. 20 MPa) rotary union (coolant coupling).  It is aimed for small diameter gundrilling to retrofit the existing low pressure coolant supply systems. It is a valuable solution for gundrills of small diameters.  Personally, I would recommend this pump for all gundrilling machines as a standard option and use it when drill diameter is equal to or less than 0.16" (4mm) regardless of the drill point geometry and design.  For gundrills of "normal" design it can be used successfully (the limitation is only the flow rate available which is 6 gpm) for drill diameters up to 0.36" ( 9 mm) while for the stepped and stepped-slash point grinds (which, in my opinion, should never be used) it may present some problems with chip removal.

  - Ming Lee Tool-Steel & Machines Co., Ltd. produces column deep-hole machine.  Its web page of no use - just a slide show.

  -Mollart produces deep-hole drilling systems. Working with BOTEK of Germany, MOLLART's Tooling Division provides a wide range of tooling solutions for deep hole drilling applications. Web site is designed non-professionally.  No help to users is provided.

SHOWA TOOL USA, INC. SuperDrill Large-diameter deep-hole drilling system. 1.890"-11" diameter and up to 15 X diameter hole-depth. Web-site contains no info, no graphic, just contact info.  

  Star Cutter - Probably was the biggest producer of gundrill in the world.   

-Tarus Tarus Products Inc. manufactures a range of CNC Milling Machines, Deephole Drilling Machines and Coordinate Measuring Machines. Their primary focus is to serve the Automotive Tooling and Fixture Manufacturers.

  - TBT produces deep-hole drills and machine of good quality.  the main advantage of this company is the system approach and their deep understanding what they are doing.  they are not cheap but it pays back.  However, the company is rather narrow-minded - their drills work not really great on the machine produced by other companies and they could not understand why.  Recently the company opened re-tipping and re-sharpening facilities in Detroit metro area.

  - Technidrill is a producer of deep-hole machines.  Web page contains very general info on deep-hole machining though a bit distorted or twisted.  No help to users on making proper selection of deep-hole machines.  Machines are relatively inexpensive.  Recommended for non mass production non sophisticated users.

  Trepan Tools - Produces trepanning tools “A la Russia 1950’” Some “clones” of American Heller BTA drills.  

  Tungaloy - Produces a variety of gundrills. Terminology used on its website is incorrect and thus misleading. No customer info on the machining regime accuracy, coolant, re-sharpening, etc. No ranges of length or diameter are available.  

UNISIG  claims that the company has implemented nearly every deep-hole drilling tool available to the U.S market with great success, including gundrilling, gun reaming, BTA (STS) drilling, counterboring, Ejector drilling, trepanning, pull boring, skiving and roller burnishing.  Moreover, it is proud to take on the projects that others won't touch. As pointed out, the company utilize the best total approach for your application and maintain close relationships with our customers and suppliers.  Unfortunately, the company website does not reveal the meaning of "the best total approach" or its particular applications, case studies, etc.  Personal contacts, however, show good technical knowledge.

- Unicac produces BTA (STS) and Ejector drills. Its web site is a detailed catalog with no technical information on the implementation of drills, coolants etc.  Besides e-mail, no other contact info is provided.